Tetrarkhia are Mikuru Bandou (CV: Natsumi Yamada), Haku Nishidate (CV: Miki Satou), Akari Haeno (CV: Tomoyo Takayanagi), Kuroha Shirokita (CV: Nozomi Nishida)
M-01
Composer: Naozumi Mabuchi
Arranger: Naozumi Mabuchi
Lyricist: Genki Mizuno
M-02
Composer: Kei Ishikawa
Arranger: Kei Ishikawa
Lyricist: Kei Ishikawa
Album was composed by Kei Ishikawa / Naozumi Mabuchi and was released on November 21, 2018. Soundtrack consists of 4 tracks tracks with duration over about 20 minutes. Album was released by Pony Canyon.
CD 1
| 1 | Heroic Spark | 04:01 | |
| 2 | Seventeen Feels | 04:00 | |
| 3 | Heroic Spark [Instrumental] | 04:01 | |
| 4 | Seventeen Feels [Instrumental] | 03:58 | |
